def main(x):
    for i in range(9):
        _min = 2000 - (200 * (i + 1))
        if _min <= x:
            print(i + 1)
            return


if __name__ == "__main__":
    x = int(input())

    main(x) def main(x):
    for i in range(9):
        _min = 2000 - (200 * (i + 1))
        if _min <= x:
            print(i + 1)
            return main for i in range(9):
        _min = 2000 - (200 * (i + 1))
        if _min <= x:
            print(i + 1)
            return i range(9) range 9 _min = 2000 - (200 * (i + 1)) _min 2000 - (200 * (i + 1)) 2000 200 * (i + 1) 200 i + 1 i 1 if _min <= x:
            print(i + 1)
            return _min <= x _min x print(i + 1) print i + 1 i 1 return x x if __name__ == "__main__":
    x = int(input())

    main(x) __name__ == "__main__" __name__ "__main__" x = int(input()) x int(input()) int input() input main(x) main x x = int(input()) int(input()) x def main(x):
    for i in range(9):
        _min = 2000 - (200 * (i + 1))
        if _min <= x:
            print(i + 1)
            return def main(x):
    for i in range(9):
        _min = 2000 - (200 * (i + 1))
        if _min <= x:
            print(i + 1)
            return main
def main(x):
    for i in range(9):
        _min = 2000 - (200 * (i + 1))
        if _min <= x:
            print(i + 1)
            return


if __name__ == "__main__":
    x = int(input())

    main(x)
